Enabling a Round-Trip Packet Loss Measurement in a Packet-Switched Communication Network

2. The method according to claim 1, wherein step a) comprises setting said packet loss field of a packet to be transmitted to said second node equal to said at least one measurement value in response to reception of a packet from said second node.

3. The method according to claim 1, wherein step a) is terminated when said first node receives the first one of said second packets from said second node.

6. The method according to claim 5, wherein at least one of said step a) and said step c) comprises ignoring packets received at said first node from said second node after a time gap has lapsed since the beginning of said step a) and said step c), respectively.

11. The method according to claim 10, further comprising providing a round-trip time measurement between said first node and said second node as a difference between detection times of the first detected one of said first packets and the last detected one of said first packets.

12. The method according to claim 1, wherein at least one of said step a) and said step c) comprises ignoring packets received at said first node from said second node after a time gap has lapsed since the beginning of said step a) and said step c), respectively.